# Physics Formula Library by CS vs Physics Study

The clearest difference is ads: Physics Study at none against Physics Formula Library by CS's shown. On price, update cadence, in-app purchases and device support there is nothing between them.

Both are free to download. Physics Formula Library by CS sells 1 one-off in-app purchase and Physics Study sells 2 in-app purchases, starting at $5.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Physics Formula Library by CS ships an update every 6 months, Physics Study every 5 months. The most recent releases landed on October 20, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | Physics Formula Library by CS | Physics Study |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 6 months | **Every 5 months** |
| Size | 10 MB | 20 MB |
| Requires iOS | **18.4** | 18.6 |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 12+ |
| Developer | [ChatStick Company Limited](https://appshunter.io/developer/1165816085) | [Patrick van der Ploeg](https://appshunter.io/developer/1789764470) |

## What reviewers say

### Physics Formula Library by CS

[App page](https://appshunter.io/ios/app/physics-formula-library-by-cs/id6752376666)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock All Features | $1.99 | one-time |


### Physics Study

[App page](https://appshunter.io/ios/app/physics-study-ai-helper/id6754838420)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Physics Helper Weekly | $5.99 | per 7 days |
| Physics Helper Annual | $39.99 | per year |


## Frequently asked questions

### Is Physics Formula Library by CS free?

Physics Formula Library by CS is free to download, with in-app purchases available.

### Is Physics Study free?

Physics Study is free to download, with in-app purchases available.

### Do Physics Formula Library by CS or Physics Study have ads?

Physics Formula Library by CS shows ads; Physics Study does not.

### Which is updated more often, Physics Formula Library by CS or Physics Study?

Physics Formula Library by CS ships an update every 6 months, and Physics Study every 5 months. Most recently, Physics Formula Library by CS was updated on October 20, 2026 and Physics Study on October 13, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*